CC3+ Q&A Jeff's Overland Outline Challenge
Jeff asked how to remove (or hide) the blue-purple outline drawn on landmasses with the default CC3+ overland Land mapping tool.
The secret is that the Default Land tool actually draws TWO objects onto your map. The first is the green landmass itself, and the second is a thin coastal line. The landmass object sits on the LAND sheet, while the coastline sits on the COAST sheet.
You can simply HIDE the COAST sheet via the Sheets & Effect tool... or better still, modify your CC3+ mapping tools draw landmass without coastlines.